I'm Emerson, from brazil. I'm a personal trainer here so I have some tips to u.
The first one is: We have a calories balance called basal metabolism rate. this is the quatity of energy your body needs per day. When u eat more than that rate you become fatter. So is important you to do a negative balance, eat less than your body spends. But, the best way to do that is to eat nice nutrition food and pratice aerobics exercises.
The second one: Look for a personal trainer or fitness intructor in dublin to make u a body composition analys. Therefore u will know about your B.M.R. (basal metabolism rate) and He/she will conduct you to the best way to lose this extra weight.
The third one: Try to choose the physical activity that you enjoy doing. This is the best activity to lose weight.